Water heater



May 28, 1946. A' A. H. HABERs'ruMP 1 2,401,151-

' WATER HEATER l Filed Aug. 9, 1943 2 Sheets-Sheet l l l] l l l' 59%.,fami...

JNVETOR.

Patented May 28, 1946 UNITED STAT ES` PATENT QfFFlC E WATER HEATER.Alfred H: Haber-stump, Detroit,` Mich., assigner' to' The MurrayCorporationv of America,V Detroit;

Mich., a corporation of Delaware Application August 9, 1943, Serial No.497,893`

16` Claims.

This invention relates to water heaters and particularly to a waterheater ofthe insulated type of variablecapacity and wherein a convectionflow of water is produced.

The tank is made of a plurality of stampings, the height of which mayvary to change the tank capacity. The stampings are made in a single setof dies and by trimming the open end before assembly to various heightsthe desired capacity is obtained. A gas, coal, oil, or other type offuel Iburning equipment is disposed in the bottom of the insulatingcover directly below the bottom of the tank. A ue, having a plurality ofpassageways, extends through the tank and the top of the outer cover.The nue extends below the bottcm of the tank tov prevent the products ofcoinbustion from iiowing directly thereinto. A baille may be disposednear the bottom of the tank, sloping from the front .directly over theburner upwardly to the back and having a sleeve con-` nectedthereto anddisposed about the flue to'produce a more rapid convection movement oithe water. This produces rapid heating and delivering of the water tothe top portion of the tank to which the outlet pipe is attached.

Accordingly, the main objects of this invention are: to form a hot waterheater from a, tank and an outer casing between which insulatingmaterial is` disposed and an additional inner case .below` the tankspaced from the outer casing to form insulating receiving` spacetherebelow; to form a tank and outer casing from pot-like stampings, thedepth of which may be adjusted so that when combined the capacity of theresulting tank may be varied; toy provide a nue through the bottom andtop of the tank, having a plurality of passageways to increase thecontact surface with the water; to provide a tank having an arcuatebottom portion disposed normal tothe iiue which extends therebelow toprevent the products of combustion from moving directly thereinto; toprovide a baiile sloping from a, point directly over the burner to therear about the ue in communication with a sleeve encompassing the flueand secured to the baliie for directing the heated Water from the burnertoward theflue and upwardly thereabout to the top of the tank; and, ingeneral, to provide a tank and method of construction which producestanks of variouscapacities from a single set of dies-and which iseconomical of manufacture and use.

Other objects and features of this invention will be either specificallypointed out or-will become apparent when referring, for a betterunderstanding of the invention, to the following description takenV inconjunction `with the: accompallying drawings, wherein:

Figure 1 is a sectional view ofawaterheater embodying features of thisinvention;

Fig. 2 is a sectionalviewoi the structure `illustrated in Fig. 1, takenon the line-Z-Z thereof;

Fig. Bis a sectional view 'of `structure illustrated iii-Fig. 1, takenon the line 3-3 thereof;`

K Fig.` 4 is a broken View of structure,v similar vto that illustratedin Fig. 1, showing a further form which the invention may assume;

Fig. 5 isa sectional view of structure illustrated in Fig. 4, taken' onthe liney 5--5- thereof; andA l Fig. 6 isan enlarged broken sectionalviewlof stamping I2 and abottom stamping I3 of heavier l gauge materialthan the stamping I2.` These.`

structure similar to that illustrated in Fig.l 4, showing. a modifiedformvoi the invention.

Referring to Figures 1. to 3, inclusive, thewa ter heater embodies atank ID made from a top stampings are pot-shapedand provided at; theirperipheral `edge with an outwardly directed ange` I4 which abuts eachother and are weldedV together. It will be. noted` from Fig. 1 that thestamping I3 may have-the portion I5 cut 01T at I6 `and Vflangedoutwardly so as to reduce:` the capacity of the resultingv tank by-theareaI disposed betweenlthelines I4 and |65 Thismay reduce a tankhav-inga GO-gallon capacity to one having a 50 gallon capacity.

Similarly, stamping I2 may` be trimmedat the line I-'I and flangedthereat'and,` abutted against the ilange I4, or the one at the'point I6.`This will further reduce the capacity of the tankby the area betweenthe` lines I4 and I1,` orbetween the lines I'I and I 6. This mightreducea tank having a gallon. capacity tank ,toa 40 gallon capacity tank, orto a 30 gallon capacity. It will thusbe seen` thatw by` varyingthelshearing operation on thelopen end of the stampings I2 and I3, .thata` large variation of capacities may be obtained for the resulting tank.This isimportant as the trade demands such variation in capacity. and`applicant avoids the necessity of providing a-plurality ofY die setsonefor each capacity,` by the presentarrangement. This em- `bodies a singledie set which produces like stampofV the stampingY I2; having a`threaded collar 22` welded,` swaged, or otherwise secured thereto. Aplurality of elbows 23 connect the outletlopening 2l to the conduit 24-at the top side portie-noi the water heater. Aligned, elongated flangedopenings 25 are provided in the top and bottom of the stampings I2 andI3, through which the smoke flue 2S extends. The end portions 21 areelongated in shape to mate with the flange in the openings 25 and to besealed thereto as by welding.

The intermediate portion 2% between the elongated ends 21 are formedinto a plurality of tubes 29 joined by webs 3l which are disposedtherebetween. The webs SI are the opposite side portions of the fluewhich have been moved into abutting relation. The bottom elongatedportion 21 of the stack extends some distance below the bottom of thestamping I3 so as to provide an area 33 in which the products ofcombustion are trapped and prevented from moving directly into the ilue.This area 33 is formed by arching the bottom of the tank at 34, asillustrated in Figs. l and 2. A water inlet opening, similar to theoutlet opening 22, is provided in the side wall of the tank near thebottom thereof, as at 35.

A pair of similar stampings 31 and 38 struck from the same die areemployed to form the outside wrapper about the entire tank assemblyincluding the combustion chamber 3S. This chamber is formed by apot-likestamping 4I, which extends` over the wall of the stamping I3 and isprovided with an outwardly directed flange 42 which mates with and iswelded to the flange at the abutted ends I6 of the stampings I2 and I3.VThe stampings 31 and 38 are provided with outwardly directed flanges 34which are encompassed by an inwardly directed channel-shaped band 45which has its ends flanged outwardly at et and secured together bysuitable means, herein illustrated as by a bolt e1. The upper tankstamping I2 is spaced from the outer top stamping 31, while the stamping4I is spaced. from the outer bottom stamping 38. Depending upon thecapacity of the tank, the length of the stampings 31 and 3S are variedto conform to the tank capacity.

An insulating material 48 is disposed between the spaced walls of thetank and stamping il and the outer stampings 31 and 38 to insulate thetank as well as the combustion chamber. A collar 5I extends through thewall of the stampings 38 and "Il to provide a passageway through which aburner 52 `may be inserted or removed from the combustion chamber 39.Suitable supporting elements 53 and 54 maintain the burner inpredetermined relationship to the bottom portion of theftank. A suitableconduit55 delivers gas to the burner herein illustrated, for heating thewater. It is to be understood that the combustion chamber 39 could beconstructed to burn coal, oil or other fuels when substituted for gasfor heating the water.

It will be noted that the elbows 23, which form the top portion of theoutlet conduit, are enclosed by the upper stamping 31 and that theoutlet pipe 24 extends through a small aperture in the wall of thestamping. A similar inlet pipeextends through 'an aperture in the wallof the stamping 38 in communication with the inlet opening 35. Thestamping 38 is provided with a number 4of apertures 51 through which thelegs 58 extend for supporting the hot water unit.

' Tabs 59 are struck outwardly when forming the apertures having a` holetherein through which a screw `6I extends to secure the tab to the leg.The upper part of the legs are ilanged at E2 and are welded to thebottom surface of ythe stamping 4I. On the structure as hereinillustrated, three legs Stare provided for supporting the entire waterheating unit. It is to be understood that any number of legs may beutilized and attached to the bottom of the stampings, as hereinillustrated.

In Figs. 4 and 5, a further form of the invention is illustrated, thatwherein a baille 66 is supported by legs ,51 on the bottom of thestamping I3. The baille slopes from the water inlet and burner towardthe flue 28. The water delivered between the baille and tank bottom willbe heated and will move by convention toward the flue. About the ilue anelongated sleeve 68 is disposed in spaced relation thereto. The watermoving upwardly under the baille E6 will continue such upward movementwithin the sleeve 68 whilein intimate Contact with the flue surface. Thesleeve 68 terminates vnear the top of the tank so that a small quantityof water will be immediately heated to a high temperature and deliveredto the top outlet portion of the tank when the burner is ignited. Thiseliminates the necessity of heating all of the water of the tank to adesired degree before any portion thereof ycan be withdrawn at a desiredtemperature. Otherwise, the structure described in relation to Figs. 4and 5 is similar to that illustrated in Figs. l to 3.

In Fig. 6, an enlarged section of a tank discloses that the tank andflue are made of stainless-clad steel sheets with the stainless surfacedisposed toward the tank interior. The stainless surface 12 on thestampings Ill and I3 is disposed on the inside of the tank, which isalso true of the stainless surface 13 on the flue 28. When the abuttedflanges of the stampings I0 and I3 are welded together, the stainlessmaterial will seal the joint 14 on the tank interior so that it willhave a continuous stainless surface. Similarly, the joint 15 Weldedbetween the nue 23 and the flange at the slot in the tank bottom and topwill'be filled with the stainless steel material and a continuoussurface of stainless steel will be present on the flue as Well as thejoints thereof with the tank. In other words, the entire tank interiorwill be of stainless steel while the outer, heavier body material of thetank will be of a cheaper and more workable steel.

What is claimed is:

1. In a water heater, a cylindrical tank, a cylindrical pot-shapedelement telescoped over and secured to the bottom portion of said tankwith the bottoms of the element and tank in spaced relation to form acombustion chamber, and a casing encompassing said tank and element.

2. In a Water heater, a cylindrical tank, a cylindrical pot-shapedelement telescoped over and se cured to the bottom portion ofsaid tankwith the bottoms of the element and tank in spaced rela tion Vto form acombustion chamber, a casing encompassing said tank and element andspaced therefrom, and insulating material disposed in said space.

3. In a water heater, a cylindrical tank, a cylindrical pot-shapedelement telescoped over and secured to the bottom portion of said tankwith the bottoms of the element and tank in spaced relation to form acombustion chamber, a casing encompassing said tank and element andspaced therefrom, insulating material disposed in said spacefand legssecured to the bottom of said tank and extending through the casing.

4. Ina water heater, a cylindrical tank, a cylindrical pot-shapedelement telescoped over and secured to the bottom portion of said tankwith ,the bottoms of the elementvand tank in spaced l-indrical.pot-shaped element telescopedY over. andV securedtowthe bott-omportionof said tankwith the bottoms of .the elementand tank'in spaced`relation,v a casing made of 'two like cylindrical pot-shaped stampings:having their open ends hanged outwardly and` encompassing said tank andelement, anda channel-shaped band extending over said flangesfor joiningthe adjacent. open, ends of the stampings together.

7. In a water heater, a cylindrical tank, a cylindrical pot-shaped`element telescoped over and secured to the bottom .portion of said tankwith the bottoms of the element and tank in spaced relation, a casingmade of two like cylindrical pot-shaped stampings having their open endsiianged' outwardly and encompassing said. tank and element, achannel-shaped band extending over said. anges for joining the adjacentopen ends of the stampings together, said stampings being disposed inspaced relation to said tank and element, and insulating materialdisposed in sai space.

8. In a water heater, a tank made from two pot-shaped stampings whichare joined together at their open ends, said tank having aligned elon*gated hanged slots in its top and bottom, a flue comprising a pluralityof circular passagevvays with flanges therebetween terminating at theends in elongated openings which extend through the hanged slots in thebottom and top of the tank and are sealed ntherewith, and a. casingdisposed over said tank through which the top portion of the flueextends, and insulating material disposed between said tank and casing.

9. In a hot water heater, a tank made from pot-like stampings ofstainless-clad steel with the stainless surface on the inside, the openends of the stampings being flanged outwardly and secured together byWelding with the stainless steel surface on the inside of the tankmaintained continuous, a flue made of stainless-clad steel with thestainless surface on the outside extending through the bottom and top ofsaid tank and secured thereto with the stainless surface` continuo-uswith that of the inside of the tank, a pot-shaped element secured to thebottom portion of said tank with the bottoms of the element and tank inspaced relation to form a combustion chamber, a casing made of two likepot- 'shaped stampings extending over the bottom and top of the tank andelement, and means for joinin the open ends of the casing stampingstogether. i

l0. In` a hot water heater, a tank made from pot-like stampings ofstainless-clad steel with the stainless surface on the inside, the openends of the stampings being flanged outwardly and secured together bywelding with the stainless steel surface on the inside of the tankmaintained continuous, a flue made of stainless-clad Steel with thestainless surface on the outside extending through the bottom and top ofsaid tank and secured thereto with the stainless surface continuous withthat ofthe reindeer the:` tank, a pot-shaped element secured to the.bot-

y tom portion of said tank With the bottomsof the element and tankin-spaced relation to. form; a combustion chamber, a casing made of twoilike pot-shaped stampings extending over the bot` tom andtop of thetank andr element, means forv joining the open ends of thecasing--stampings together, and insulating material disposed: betweensaid` outer casing-and the tankand element.

11. In a hotwater heater, a tank made of potshaped stampings joinedtogether at their open ends with the bottom of one of the.stampingsforming an arcuate dome at-.the top ofthe tank and with thebottom of the other stamping formed as an arch-extending from one sideto` the other of the tankail'ue extending through the top and bottom ofthe tank with the bottom portion of the nue projecting to the bottom ofthe arch to prevent the products otcombustion from passingdirectlytherein, the upper portion of said ilue extending above thedome, apotshaped element securedto the bottom portion of the tank withthe bottom of the tank andlele` ment in spacedv relation to form acombustion chambergand pot-like stampings extending over` the top andbottom of the tank and element and secured together at their open ends.

12. In a hotlwater heater, a tank made of `potshaped stampings joinedtogether at their openends with the bottom of one of the stampingsforming an arcuate dome at the top of the tank and with the bottom ofthe other stamping formed as an arch extending from one side to theother of the tank, a iiue extending through the top and bottom of thetank with the bottom portion of the ilue projecting to the bottom of thearch to prevent the products of combustion from passing directlytherein, the upper portion of said flue extending above the dome, apotshaped element secured to the bottom portion of the tank with` thebottom of the tank and element in spaced relation to form a combustionchamber, and pot-like stampings extending over the top and bottom ofthetank and element and secured together at their open ends, said casingat the top having an opening through which the upper portion of the flueextends.

13. In a hot Water heater, a tank made of potshaped stampings joinedtogether at their open ends with the bottom of one of the stampingsforming an arcuate dome at the top of the tank and with the bottom ofthe other stamping formed as an arch extending from one side to theother of the tank, a ue extending through the top and bottom of the tankwith the bottom portion of the flue projecting to the bottom of the archto prevent the products of combustion from passing directly therein, theupper portion of said flue extending above the dome, a potshaped elementsecured to the bottom portion of the tank with the bottom of the tankand element in spaced relation to form a combustion chamber, pot-likestampings extending over the top and bottom of the tank and element and.se-f cured together at their open ends, said casing at the top havingan opening through which the upper portion of the flue extends, and legssecured to the bottom of said element which extend through said casing.

14. In a hot water heater, a tank made of potshaped stampings joinedtogether at their open ends with the bottom of one of the stampingsforming an arcuate dome at the top of the tank and with the bottomk ofthe other stamping formed as an arch extending from one sider to theother of the tank, a flue extending through the top and bottom of thetank with the bottom portion of the nue projecting to the bottom of thearch to prevent the products of combustion from passing directlytherein, the upper portion of said iiue extending above the dome, apot-shaped element secured to the bottom portion of the tank with thebottom of the tank and element in spaced relation to form a combustionchamber, pot-like stampings extending over the top and bottom of thetank and element and secured together at their open ends, said casing atthe top having an opening through which the upper portion of the flueextendsflegs secured to the bottom of said element which extend throughsaid casing, and a collar extending through the casing and element toform an opening through which the fuel is conducted to the combustionchamber.

15. Ina hot Water heater, a tank made of potshaped Stampings joinedtogether at their open ends with the bottom of one of the stampngsforming an arcuate dome at the top of the tank and with the bottom ofthe other stamping formed as an arch extending from one side t the otherof the tank, a nue extending through the top and bottom of the tank withthe bottom portion of the flue projecting to the bottom of the archto-prevent the products of combustion from passing directly therein, theupper portionV of said flue extending above the dome, a pot-shapedelement `secured. to the bottom portion of the tank with the bottom ofthe tank and element in spaced relation to form a combustion chamber,pot-like 'stampings extending over the top and bottom of the tankandelement and secured together at their open ends, said casing at thetop having an opening through which the upper portion of the nueextends, legs secured to the bottom of said element which extend throughsaid casing, a collar extending through the casing and element to forman opening through which the fuel is conducted to the combustionchamber, Va gas burner supported Within said chamber radjacent to saidarchway remote from said flue, a collar extending through said casingand element forming an opening through which the burner is insertable,and a conduit extending through said opening to said burner.

16. In a hot water heater, an insulated tank, a flue extending throughthe top and bottom of said tank away from the center thereof, a baffleabove the tank bottom sloping upwardly toward said flue, a sleeve aboutsaid ue joined to said baite, and a burner beneath the bottom of saidtank opposite to said ue under the lower portion of said baiiie.

ALFRED H. HABERSTUMP.

